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GOLDFINCH Carduelis carduelis
 
Conservation Listings Long term trend

Table 4/Amber
(25-49% Population decline)
Biodiversity Steering Group Conservation Concern List

UK: Fluctuating, with no long-term trend
 
Status Summary
Goldfinch abundance fell sharply from the mid-1970s until the mid-1980s, but the decline was preceded and followed by significant population increases. These population changes are explained almost entirely by changes in annual survival and are likely to have been caused by agricultural intensification reducing the availability of weed seed or environmental change or hunting pressure in the Franco-Iberian wintering grounds of the migrant majority of the population (Siriwardena et al. 1999). No clear trends have occurred in breeding performance.
 
 
Table of population changes for Goldfinch
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 96 9 -14 36    
  25 1973-1998 99 -11 -28 5    
  10 1988-1998 91 49 30 66    
  5 1993-1998 97 11 -1 24    
CBC farmland 30 1968-1998 60 19 . .    
  25 1973-1998 61 -5 . .    
  10 1988-1998 65 59 . .    
  5 1993-1998 71 14 . .    
CES adults 14 1984-1998 30 20 . .    
  10 1988-1998 36 7 . .    
  5 1993-1998 41 -3 . .    
CES juveniles 14 1984-1998 18 -28 . . [>25*] Small sample
  10 1988-1998 21 2 . .    
  5 1993-1998 24 32 . .    
BBS UK 5 1994-1999 962 1 -6 9    
BBS England 5 1994-1999 809 -4 -12 4    
BBS Scotland 5 1994-1999 55 1 -31 47    
BBS Wales 5 1994-1999 78 57 20 105    
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Goldfinch
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Clutch size 30 1968-1998 19 None       Small sample
Brood size 30 1968-1998 33 None        
Daily failure rate (eggs) 30 1968-1998 34 None        
Daily failure rate (chicks) 30 1968-1998 28 None       Small sample
Laying date 30 1968-1998 22 None       Small sample
Percentage juveniles (CES) 14 1984-1998 35 Smoothed trend 108 productivity index 100 productivity index -7%  
Percentage juveniles (CES) 10 1988-1998 41 Smoothed trend 100 productivity index 100 productivity index 0%  
Percentage juveniles (CES) 5 1993-1998 47 Smoothed trend 63 productivity index 100 productivity index 59%  
 
   

The report should be cited as: Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Bashford, R.I., Beaven, L.P., Freeman, S.N., Marchant, J.H., Noble, D.G., Raven, M.J., Siriwardena, G.M., Thewlis, R. and Wernham, C.V. (2001) Breeding Birds in the Wider Countryside: their conservation status 2000. BTO Research Report No. 252. BTO, Thetford. (http://www.bto.org/birdtrends)




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Last updated: 26 March, 2001

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